New Defender's Study Bible Notes
4:13 The cloke. It is touching to note that Paul, who could have become a rich Pharisee, was willing instead to suffer the loss of all things for Christ (Philippians 3:8), ending up in a cold, filthy, damp Roman dungeon next to the Tiber River, needing a cloke just to keep warm in the coming winter (II Timothy 4:21). But he would soon receive a crown!
4:13 the books. Note the remarkable example set by the apostle. Awaiting execution, in a dark prison cell, he still wanted to keep reading and studying, the better to serve the Lord and to prepare to meet Him.